<template>
    <div class="sidebar">
        <el-menu
                :default-active="onRoutes"
                class="sidebar-el-menu"
                background-color="#324157"
                text-color="#bfcbd9"
                active-text-color="#20a0ff"
                :collapse="collapse"
                unique-opened router>
            <template v-for="item in items">
                <template v-if="item.subs">
                    <el-submenu :index="item.index" :key="item.index">
                        <template slot="title">
                            <i :class="item.icon"></i>
                            <span slot="title">{{item.title}}</span>
                        </template>
                        <template v-for="subItem in item.subs">
                            <el-submenu v-if="subItem.subs" :index="subItem.index" :key="subItem.index">
                                <template slot="title">{{subItem.title}}</template>
                                <el-menu-item v-for="(threeItem,i) in subItem.subs" :key="i" :index="threeItem.index">
                                    {{ threeItem.title }}
                                </el-menu-item>
                            </el-submenu>
                            <el-menu-item v-else :index="subItem.index" :key="subItem.index">
                                {{subItem.title}}
                            </el-menu-item>
                        </template>
                    </el-submenu>
                </template>
                <template v-else>
                    <el-menu-item :index="item.index" :key="item.index">
                        <i :class="item.icon"></i>
                        <span slot="title">{{item.title}}</span>
                    </el-menu-item>
                </template>
            </template>
        </el-menu>
    </div>
</template>

<script>
    import Bus from 'common/js/bus'
    export default {
        name: "sidebar",
        data(){
          return {
              collapse: false,
              items:[
                  {
                      icon:'el-icon-lx-home',
                      index:'dashboard',
                      title:'系统首页'
                  },
                  {
                      icon: 'iconfont icon-navicon-wzgl',
                      index: 'article',
                      title: '文章管理',
                      subs: [
                          {
                              index: 'articleList',
                              title: '文章列表'
                          },
                          {
                              index: 'addArticle',
                              title: '新增文章',
                          },
                      ]

                  },
                  {
                      icon: 'el-icon-lx-copy',
                      index: 'tabs',
                      title: '分类标签',
                      subs: [
                          {
                              index: 'tagList',
                              title: '分类标签列表'
                          },
                          {
                              index: 'addTag',
                              title: '新增分类标签'
                          }
                      ]
                  },
                  {
                      icon: 'el-icon-lx-calendar',
                      index: '3',
                      title: '表单相关',
                      subs: [
                          {
                              index: 'menuTree',
                              title: '基本表单'
                          },
                          {
                              index: '3-2',
                              title: '三级菜单',
                              subs: [
                                  {
                                      index: 'editor',
                                      title: '富文本编辑器'
                                  },
                                  {
                                      index: 'markdown',
                                      title: 'markdown编辑器'
                                  },
                              ]
                          },
                          {
                              index: 'upload',
                              title: '文件上传'
                          }
                      ]
                  },
                  {
                      icon:'el-icon-upload',
                      index:'OssUpload',
                      title:'OSS上传'
                  },
              ]
          }
        },
        created(){
          Bus.$on('collapse',res=>{
              this.collapse = res;
          })
        },
        computed:{
            onRoutes(){
                return this.$route.path.replace('/','');
            }
        }
    }
</script>

<style scoped lang="scss">
    .sidebar{
        position: absolute;
        left: 0;
        top: 70px;
        bottom: 0;
        overflow-y: scroll;
        &::-webkit-scrollbar{
            width: 0;
        }
    }
    .sidebar-el-menu:not(.el-menu--collapse) {
        width: 200px;
    }
    .sidebar > ul{
        height: 100%;
    }

</style>
